–106–
Freeze Cycle
DISCHARGE pressure
_______ ______ _____
1 minute Middle End
into cycle
If discharge pressure is High or Low refer to a freeze cycle high or low discharge pressure prob-
lem checklist to eliminate problems and/or components not listed on this table before proceeding.
Freeze Cycle
SUCTION pressure
_______ ______ _____
Beginning Middle End
If suction pressure is High or Low refer to a freeze cycle high or low suction pressure problem
checklist to eliminate problems and/or components not listed on this table before proceeding.
Suction pressure is
High
Suction pressure is
Low or Normal
Suction pressure is
High
Suction pressure is
High
Harvest Valve
Wait 5 minutes into the
freeze cycle.
Compare temperatures of
compressor discharge
line and both harvest
valve inlets.
One harvest valve inlet
is Hot
-and-
approaches the
temperature of a Hot
compressor discharge
line.
Both harvest valve
inlets are
Cool enough
to hold hand on
-and-
the compressor
discharge line is Hot.
Both harvest valve
inlets are
Cool enough
to hold hand on
-and-
the compressor
discharge line is
Cool enough
to hold hand on.
Both harvest valve
inlets are Cool
enough
to hold hand on
-and-
the compressor
discharge line is Hot
Q OR J MODEL - DUAL EXPANSION VALVE
Operational Analysis 1 2 3 4
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